Quote:
Originally Posted by Stuart
I'd be surprised if it did. The quality loss would be significant and would give Sky a huge selling point.
---------- Post added at 21:31 ---------- Previous post was at 21:18 ----------
You are getting compression (MPEG2, MPEG4) and data structure mixed up. DVB-C, DVB-C2, DVB-T etc define the structure of the data being sent. This data can be compressed using either MPEG 2 or MPEG 4.
Think of it this way. When you download something from the Internet, it is usually carried using TCP/IP packets (not always, but most downloads are). The hardware carrying the packets has no specific "knowledge" of what it is sending. That data can be an image, a web page, an application or whatever. The TCP/IP protocol does not care what is sent, merely that the data it has is sent to the correct address. DVB-C2 is like TCP/IP in this respect.
The compression defines what data is sent. That is sorted out by what happens to be at the end of the connection, be it a computer or cable box.
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I won't pretend to understand all that but do any cable operators currently use MPEG4?
Some of the big cable operators of Europe are pushing for DVB-C2 which supposedly is 30% more efficient than DVB-C, VM have said they do not have any plans to use it though.
http://www.broadbandtvnews.com/2009/...-dvb-c2-ibc09/